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Old 09-06-2005   #61
Klortho
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Re: Top Speed

I've clipped 125 with mine in 4th gear turning about 3700 RPM with 3.42's and still had 2 more gears to go, so I could top 160 easily.

But then again, I am running an LT1 and T56 in the car
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Old 09-07-2005   #62
F-Bobby
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Re: Top Speed

if you do the calculations using a 700R$ and 245 50 16 tires. Mathematically our cars should be at 200 MPH at 6,000 RPM in 4th gear. that is with 3.27 gears in overdrive which calculates to 2.29 rear end gears. Now none of our cars are gonna do that kinda speed cause they dont have enough HP stock to overcome the severe wind resistance that you see up there. but theoretically it is possible.

I personally have been 175 MPH in a z06 Corvette and lemme tell ya. That was a hell of a ride. after 140 the windows feel like they are gonna blow out of the car. at 175 the dashes on the road look almost like unbroken lines.
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Old 09-08-2005   #63
MunsonGTA
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GTA Year: 1987
GTA Engine: Custom
Re: Top Speed

how much power would it take to push one of our cars to 200 mph? Bet I could show you a GTA that might do it.
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87 GTA: Forged 408 LSX short block, TEA stage 2 cnc ported 243 heads, BTR Stage 3 stroker cam, Fast 102 intake, NW 102 TB, Longtube headers, custom 411 ECM, custom harness, custom tuned, Performabuilt stage 2 4l60E with PTC 2800 stall, 9 bolt rear with 3.70 gears and TAP girdle.

11.16 at 123 mph.
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Old 09-09-2005   #64
GTA_340
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Re: Top Speed

anyone who says they've done over 115 mph in a stock gta is lying..Sorry, but the car is governed out at 115 ive been there and done that. the tach starts to jump all over as the gov. kicks in. There are ways around the gov. ie take a toggle switch from radio shack and splice it into the VSS off the computer when you hit about 100 mph kick the switch and the car no longer knows what speed its going, and you can blow through the 115 mph wall. But, im into the low end stuff how often do you legitimently find your self needing to go over a hundred down the highway (yes fun but still). anyway id rather stick some 3.73 or 4.10 rearend gears in and pop wheelies off the line. just my opinion.
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Old 09-09-2005   #65
G8erB8
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Re: Top Speed

I've done 120 in mine. Not full throttle either cause it would downshift. And I'm not lying.
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Old 09-10-2005   #66
nblanchard
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Re: Top Speed

i believe ya.. thats what mine does.. but i was able to squeeze 145 o ut of her
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Old 09-10-2005   #67
FearThisGTA
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GTA Year: 1991
GTA Engine: 350 TPI Automatic
Re: Top Speed

Quote:
Originally Posted by GTA_340
anyone who says they've done over 115 mph in a stock gta is lying..Sorry, but the car is governed out at 115 ive been there and done that. the tach starts to jump all over as the gov. kicks in. There are ways around the gov. ie take a toggle switch from radio shack and splice it into the VSS off the computer when you hit about 100 mph kick the switch and the car no longer knows what speed its going, and you can blow through the 115 mph wall. But, im into the low end stuff how often do you legitimently find your self needing to go over a hundred down the highway (yes fun but still). anyway id rather stick some 3.73 or 4.10 rearend gears in and pop wheelies off the line. just my opinion.

WELL!! I guess I am lying, b/c I have done it more than once. Nothin personal but you may wanna double check that and I have done it with 3.73 gears and 3.23 gears.
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Cliff Jones
1991 GTA Trans Am
w/305,231 miles
on the original motor!!!!
Time of Death on motor, 4:07pm on 05/29/2010.
Hp:211.2@4200rpms/Tq.328.5@2700rpms
Best et: 13.959@97.05mph
Best mph: 98.3
Best 60' : 1.875 on BFG Comp TA's w/ 32 lbs of air in them
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Old 09-10-2005   #68
nblanchard
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Re: Top Speed

so.. GTA_340.. you are calling all of us liars? Make your way over to Niagara Falls Canada, and I will prove you wrong like there's no tomorrow.
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Best Track Time is 14.396 @ 95.71MPH

225.5hp @ 4250rpm (at the wheels)
325.8ft-lbs @ 3250rpm (at the wheels)
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Old 09-10-2005   #69
twobirds
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Re: Top Speed

Quote:
Originally Posted by GTA_340
anyone who says they've done over 115 mph in a stock gta is lying..Sorry, but the car is governed out at 115 ive been there and done that. the tach starts to jump all over as the gov. kicks in. There are ways around the gov. ie take a toggle switch from radio shack and splice it into the VSS off the computer when you hit about 100 mph kick the switch and the car no longer knows what speed its going, and you can blow through the 115 mph wall. But, im into the low end stuff how often do you legitimently find your self needing to go over a hundred down the highway (yes fun but still). anyway id rather stick some 3.73 or 4.10 rearend gears in and pop wheelies off the line. just my opinion.
Only TBI cars have the 115 gov. Not the TPI(GTA) cars. Common info on TGO.
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Old 09-10-2005   #70
F-Bobby
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Re: Top Speed

ive had mine to 130 and its as stock as you can get. there is no speed limiter. and this is with 3.27s
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Old 09-10-2005   #71
Fred91GTA
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Re: Top Speed

About 4 years ago... racing down the road at 4AM in the morning. I've had my GTA up to about 130mph, and she still had some power left in her.

Will I ever do it again?

Not in my 14 year-old GTA. That's for damn sure!
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Old 09-10-2005   #72
strc09
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GTA Year: 1988
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Thumbs Up Re: Top Speed

Hey guys...my name is Patrick and I'm new to the boards. I was reading the thread and I have often been curious how fast my car can go. Like most of you at the end have said you must be lying...I must be too because the digital speedo in mine says that I was doing about 125mph. I still had pedal left and she was pulling for more but I didn't want to chance getting busted by a cop.
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GTA: Grand Turismo Americano (Grand Touring America)
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Old 09-10-2005   #73
nblanchard
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Re: Top Speed

My belief is that there is no speed limiter, at least in my gta.. but then again.. I have an aftermarket chip as well
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Best Track Time is 14.396 @ 95.71MPH

225.5hp @ 4250rpm (at the wheels)
325.8ft-lbs @ 3250rpm (at the wheels)
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Old 09-10-2005   #74
FearThisGTA
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GTA Year: 1991
GTA Engine: 350 TPI Automatic
Re: Top Speed

Quote:
Originally Posted by strc09
Hey guys...my name is Patrick and I'm new to the boards. I was reading the thread and I have often been curious how fast my car can go. Like most of you at the end have said you must be lying...I must be too because the digital speedo in mine says that I was doing about 125mph. I still had pedal left and she was pulling for more but I didn't want to chance getting busted by a cop.

Welcome to da club!!Got any pics? Not robbin the thread but curious.
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Cliff Jones
1991 GTA Trans Am
w/305,231 miles
on the original motor!!!!
Time of Death on motor, 4:07pm on 05/29/2010.
Hp:211.2@4200rpms/Tq.328.5@2700rpms
Best et: 13.959@97.05mph
Best mph: 98.3
Best 60' : 1.875 on BFG Comp TA's w/ 32 lbs of air in them
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Old 09-10-2005   #75
FearThisGTA
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GTA Year: 1991
GTA Engine: 350 TPI Automatic
Re: Top Speed

Quote:
Originally Posted by nblanchard
so.. GTA_340.. you are calling all of us liars? Make your way over to Niagara Falls Canada, and I will prove you wrong like there's no tomorrow.
AMEN!! and if your in the south you pay the gas and we will head to Bonneville and you'll see. Some how though I dont think you will b/c its too big of a challenge.
__________________


Cliff Jones
1991 GTA Trans Am
w/305,231 miles
on the original motor!!!!
Time of Death on motor, 4:07pm on 05/29/2010.
Hp:211.2@4200rpms/Tq.328.5@2700rpms
Best et: 13.959@97.05mph
Best mph: 98.3
Best 60' : 1.875 on BFG Comp TA's w/ 32 lbs of air in them
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Old 09-10-2005   #76
nblanchard
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Re: Top Speed

Bonneville? I can get my car up to 140 on a straight country road :P Just gotta watch for the cops
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Best Track Time is 14.396 @ 95.71MPH

225.5hp @ 4250rpm (at the wheels)
325.8ft-lbs @ 3250rpm (at the wheels)
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Old 09-10-2005   #77
MunsonGTA
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GTA Year: 1987
GTA Engine: Custom
Re: Top Speed

Quote:
Originally Posted by GTA_340
anyone who says they've done over 115 mph in a stock gta is lying..Sorry, but the car is governed out at 115 ive been there and done that. the tach starts to jump all over as the gov. kicks in. There are ways around the gov. ie take a toggle switch from radio shack and splice it into the VSS off the computer when you hit about 100 mph kick the switch and the car no longer knows what speed its going, and you can blow through the 115 mph wall. But, im into the low end stuff how often do you legitimently find your self needing to go over a hundred down the highway (yes fun but still). anyway id rather stick some 3.73 or 4.10 rearend gears in and pop wheelies off the line. just my opinion.

you are mistaken my friend, many GTA will do over that with no problem. There is no speed limiter.
__________________
87 GTA: Forged 408 LSX short block, TEA stage 2 cnc ported 243 heads, BTR Stage 3 stroker cam, Fast 102 intake, NW 102 TB, Longtube headers, custom 411 ECM, custom harness, custom tuned, Performabuilt stage 2 4l60E with PTC 2800 stall, 9 bolt rear with 3.70 gears and TAP girdle.

11.16 at 123 mph.
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Old 09-11-2005   #78
FearThisGTA
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GTA Year: 1991
GTA Engine: 350 TPI Automatic
Re: Top Speed

Quote:
Originally Posted by nblanchard
Bonneville? I can get my car up to 140 on a straight country road :P Just gotta watch for the cops

Well , I said that b/c its safe and also b/c of the local law enforcement. There is a place in the Carolina's but I can "NEVER" remember the name or which state its in,lol. Its that memory thing goin south again,lol.
__________________


Cliff Jones
1991 GTA Trans Am
w/305,231 miles
on the original motor!!!!
Time of Death on motor, 4:07pm on 05/29/2010.
Hp:211.2@4200rpms/Tq.328.5@2700rpms
Best et: 13.959@97.05mph
Best mph: 98.3
Best 60' : 1.875 on BFG Comp TA's w/ 32 lbs of air in them
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Old 09-11-2005   #79
nblanchard
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Re: Top Speed

yeah.. it'd be nice to go to bonneville salt flats... but I can't afford the gas to drive the car intown.. LOL
__________________
Best Track Time is 14.396 @ 95.71MPH

225.5hp @ 4250rpm (at the wheels)
325.8ft-lbs @ 3250rpm (at the wheels)
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Old 09-12-2005   #80
FieroGTA
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Re: Top Speed

In 1988 a friend of mine bought a brand new 1988 GTA.

Black, 350, hardtop, black leather, digital dash.

Strangely enough, same exact car I just bought.

He took me for a ride in that summer of 1988, car only had 5000 milles on it, we went onto a long open strech of highway, he maxed it out at 141 to 144, saw it with my own eyes.

That was the fastest I ever went.

The fastest I ever "drove" was 120 in a 1971 MACH1.

Two dumb 19 year olds.

Nowdays I don't go over 79.

Last edited by FieroGTA; 09-12-2005 at 11:45 PM.
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